On February 27, 2022, power supply got affected in South Mumbai, Chembur, Bandra and Santacruz suburbs areas, along with central and part western railway,due to tripping of Maharashtra State Electricity Transmission Company Limited (MSETCL) line at MSETCL Trombay receiving station that connects to Tata Power transmission system.
This resulted in tripping of Trombay generation and cascade tripping of some internal lines affecting 850 MW load of all discoms in Mumbai. Tata Power immediately stepped up hydro generation to full capacity for faster restoration and avoidance of larger outage. The power supply was restored completely in around an houras the company stepped up its hydro generation to full capacity.